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What is the performance cost of having a virtual method in a C++ class?
...duly hurt others.
Contrived Example: An empty virtual destructor on an array of one million small elements may plow through at least 4MB of data, thrashing your cache. If that destructor can be inlined away, the data won't be touched.
When writing library code, such considerations are far from ...
json.dumps vs flask.jsonify
...client. While for smaller dictionaries, the response works fine, for large arrays I get a content length mismatched error on the browser. Any ideas as to why this happens? there's a limit to how much data I can send?
– sakib11
Aug 10 at 10:47
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What happens to a declared, uninitialized variable in C? Does it have a value?
...ram when it last used those stack addresses. If you allocate a lot of auto arrays you will see them eventually start neatly with zeroes.
You might wonder, why is it this way? A different SO answer deals with that question, see: https://stackoverflow.com/a/2091505/140740
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C#: Looping through lines of multiline string
...g without using much more memory (for example without splitting it into an array)?
7 Answers
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Get the (last part of) current directory name in C#
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It's a params array, so .TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar) works too.
– Kyle Delaney
Jul 16 '17 at 18:45
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Default implementation for Object.GetHashCode()
...entation for GetHashCode() work? And does it handle structures, classes, arrays, etc. efficiently and well enough?
6 Answ...
What does addChildViewController actually do?
...ler addChildViewController:] only adds the passed in view controller in an array of viewControllers that a viewController (the parent) wants to keep reference of. You should actually add those viewController's views on screen yourself by adding them as a subviews of another view (e.g. the parentView...
What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?
... is rather fast in C, and the simple algorithm doesn't require indexing an array.
NOTE: When using 64-bit values, be extremely cautious about using extra-clever algorithms; many of them only work correctly for 32-bit values.
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What does it mean to “program to an interface”?
...the interface. This means that in our little world, a member of the pests array could actually be a Telemarketer object or a HouseFly object.
The ServeDinner method is called when dinner is served and our people in the dining room are supposed to eat. In our little game, that's when our pests do ...
Why is lock(this) {…} bad?
...cal alternatives. As a simple example, unless a collection implements a ToArray or ToList method of its own...
– supercat
Jun 5 '13 at 15:25
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